mmmh no
e' un "po' pochino"
questo ad esempio il risultato della analisi fatta con il programma win che dicevo
DivX DRF Analyzer v0.9.5 Report!
File Name: C:\Documents and Settings\vale\Desktop\D--\1etaaugustea.avi
FourCC: DIVX
Codec: avc2.0.11.1110
Resolution: [ Width: 720 Height: 576 ]
Frame Rate: 25.000 frames per second
The Video has 81400 frames [ 00:54:15 ]
Average Frame quality is MEDIUM [Average DRF/quantizer is 4.87]
Standard Deviation: Quality is LOW [Std. Deviation is 3.80]
Image Resolution is HIGH
There are NO frame drops ( NO drops is better )
This video may have some frames with VERY POOR Quality!
Recomended Resolution: [544x432] (Target DRF/quantizer=2.
Performance Caracteristics:
This video seems to have too MUCH Keyframes. May degrade CDROM and Processor performance.
Macroblocks per frame: 1620 ( Poor Playback in Slow Computers, PIII450 or better required )
The Width is not multiple of 32. May degrade performance in some systems.
Kilobits per Second: 1172.34
Kilobits per Frame: 46.89
Kilobits per Macroblock: 0.029
Bits per Pixel: 0.12
Frame Type Statistics :
I Frames: 9.41%
P Frames: 90.59%
B Frames: 0.00%
S Frames: 0.00%
N Frames: 0.00%
(More Advanced Codecs use B and S frames)
Frame Quality Statistics :
DRF=1&2: 17005 23.1%
DRF=3: 18806 25.5%
DRF=4: 12057 16.4%
DRF=5: 6903 9.4%
DRF=6: 4900 6.6%
DRF=7: 3551 4.8%
DRF=8: 2062 2.8%
DRF=9: 1992 2.7%
DRF>9: 6462 8.8%
KeyF/DeltaF: 10.39%
KeyDRF<4: 4335
KeyDRF=4: 818
KeyDRF>4: 2509
AverageKeyDRF: 5.07
MAXDRF: 31
AverageDRF: 4.87
Deviation: 3.80
http://www.geocities.com/analyzerDRF/